package com.zzyl.serve.service.impl;

import java.util.List;

import cn.hutool.core.util.ObjectUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.zzyl.common.core.domain.R;
import com.zzyl.common.utils.DateUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import com.zzyl.serve.mapper.NursingLevelMapper;
import com.zzyl.serve.domain.NursingLevel;
import com.zzyl.serve.service.INursingLevelService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import java.util.Arrays;

/**
 * 护理等级Service业务层处理
 * 
 * @author howstrong
 * @date 2024-10-04
 */
@Service
@Slf4j
public class NursingLevelServiceImpl extends ServiceImpl<NursingLevelMapper, NursingLevel> implements INursingLevelService
{
    @Autowired
    private NursingLevelMapper nursingLevelMapper;

    @Autowired
    private RedisTemplate  redisTemplate;


    // 定义一个Redis常量key
    private static final String NURSING_LEVEL_ALL_KEY = "nursing_level:all";


    /**
     * 查询护理等级
     * 
     * @param id 护理等级主键
     * @return 护理等级
     */
    @Override
    public NursingLevel selectNursingLevelById(Long id)
    {
        return getById(id);
    }

    /**
     * 查询护理等级列表
     * 
     * @param nursingLevel 护理等级
     * @return 护理等级
     */
    @Override
    public List<NursingLevel> selectNursingLevelList(NursingLevel nursingLevel)
    {
        return nursingLevelMapper.selectNursingLevelList(nursingLevel);
    }

    /**
     * 新增护理等级
     *
     * todo: 3.6 添加缓存清理的逻辑
     * 
     * @param nursingLevel 护理等级
     * @return 结果
     */
    @Override
    public int insertNursingLevel(NursingLevel nursingLevel)
    {
        int result = save(nursingLevel) ? 1 : 0;

        if (result == 1){
            // 清理缓存：
            redisTemplate.delete(NURSING_LEVEL_ALL_KEY);
        }

        return result;
    }

    /**
     * 修改护理等级
     * 
     * @param nursingLevel 护理等级
     * @return 结果
     */
    @Override
    public int updateNursingLevel(NursingLevel nursingLevel)
    {
        int result =  updateById(nursingLevel) ? 1 : 0;

        if (result == 1){
            // 清理缓存：
            redisTemplate.delete(NURSING_LEVEL_ALL_KEY);
        }

        return result;
    }

    /**
     * 批量删除护理等级
     * 
     * @param ids 需要删除的护理等级主键
     * @return 结果
     */
    @Override
    public int deleteNursingLevelByIds(Long[] ids)
    {
        int result =  removeByIds(Arrays.asList(ids)) ? 1 : 0;

        if (result == 1){
            // 清理缓存：
            redisTemplate.delete(NURSING_LEVEL_ALL_KEY);
        }

        return result;
    }

    /**
     * 删除护理等级信息
     * 
     * @param id 护理等级主键
     * @return 结果
     */
    @Override
    public int deleteNursingLevelById(Long id)
    {
        int result = removeById(id) ? 1 : 0;

        if (result == 1){
            // 清理缓存：
            redisTemplate.delete(NURSING_LEVEL_ALL_KEY);
        }

        return result;
    }



    /**
     * 查询所有护理等级信息:
     *
     * status = 启用
     *
     * TODO: 3.6 添加缓存优化的逻辑
     *
     */
    @Override
    public List<NursingLevel> all() {

        // 1.先查询缓存
        List<NursingLevel>  list = (List<NursingLevel>) redisTemplate.opsForValue().get(NURSING_LEVEL_ALL_KEY);

        // 2.缓存存在，直接返回
        if (ObjectUtil.isNotEmpty(list)){

            log.info("--------[redis]---------缓存命中，直接返回缓存数据");

            return list;
        }

        // 3.缓存不存在，查询数据库
        LambdaQueryWrapper<NursingLevel> queryWrapper = new LambdaQueryWrapper<NursingLevel>()
                .eq(NursingLevel::getStatus, 1);

        list  = list(queryWrapper);
        log.info("--------[mysql]---------缓存未命中，查询数据库，并更新缓存");


        // 4. 再存入缓存。
        redisTemplate.opsForValue().set(NURSING_LEVEL_ALL_KEY, list);



        return list;
    }
}
